CSI hit for the cycle this week.

On April 7, it will get wild.

Melinda Clarke reprises her role as Lady Heather on the CBS hit, which will also feature some dangerous animals on the installment "Unleashed." What else can fans look forward to? See for yourself via the following, official trailer:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.